package JUtils.base;

import java.lang.reflect.Array;
import java.util.Collection;
import java.util.Date;
import java.util.Map;

/**
 * 判断对象、字符串、集合是否为空、不为空
 *
 * @Author:chenssy
 * @date:2014年8月4日
 */
public final class ValidateHelper {

  /**
   * 判断数组是否为空
   *
   * @return boolean
   * @author chenssy
   * @date Dec 23, 2013
   */
  @SuppressWarnings("unused")
  private static <T> boolean isEmptyArray(T[] array) {

    if (array == null || array.length == 0) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 判断数组是否不为空
   *
   * @return boolean
   * @author chenssy
   * @date Dec 23, 2013
   */
  public static <T> boolean isNotEmptyArray(T[] array) {

    if (array != null && array.length > 0) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 判断字符串是否为空
   *
   * @return boolean
   * @author chenssy
   * @date Dec 23, 2013
   */
  public static boolean isEmptyString(String string) {

    if (string == null || string.length() == 0) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 判断字符串是否不为空
   *
   * @return boolean
   * @author chenssy
   * @date Dec 23, 2013
   */
  public static boolean isNotEmptyString(String string) {

    if (string != null && string.length() > 0) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 判断集合是否为空
   *
   * @return boolean
   * @author chenssy
   * @date Dec 26, 2013
   */
  public static boolean isEmptyCollection(Collection<?> collection) {

    if (collection == null || collection.isEmpty()) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 判断集合是否不为空
   *
   * @return boolean
   * @author chenssy
   * @date Dec 26, 2013
   */
  public static boolean isNotEmptyCollection(Collection<?> collection) {

    if (collection != null && !collection.isEmpty()) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 判断map集合是否不为空
   *
   * @return boolean
   * @author chenssy
   * @date Dec 26, 2013
   */
  @SuppressWarnings("rawtypes")
  public static boolean isNotEmptyMap(Map map) {

    if (map != null && !map.isEmpty()) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 判断map集合是否为空
   *
   * @return boolean
   * @author ming.chen
   * @date Dec 26, 2013
   */
  @SuppressWarnings("rawtypes")
  public static boolean isEmptyMap(Map map) {

    if (map == null || map.isEmpty()) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * 检验对象是否为空,String 中只有空格在对象中也算空.
   *
   * @return 为空返回true, 否则false.
   */
  @SuppressWarnings("rawtypes")
  public static boolean isEmpty(Object object) {

    if (null == object) {
      return true;
    } else if (object instanceof String) {
      return "".equals(object.toString().trim());
    } else if (object instanceof Iterable) {
      return !((Iterable) object).iterator().hasNext();
    } else if (object.getClass().isArray()) {
      return Array.getLength(object) == 0;
    } else if (object instanceof Map) {
      return ((Map) object).size() == 0;
    } else if (Number.class.isAssignableFrom(object.getClass())) {
      return false;
    } else if (Date.class.isAssignableFrom(object.getClass())) {
      return false;
    } else {
      return false;
    }
  }

}
